Saga Changing Speed in Space

So I know a lot of the dogfights and stuff in Star Wars are completely unrealistic, (ie having to make your starfighter do maneuvers to turn that are done in atmospheres but don't have to be done in space, like turns)

But how do the starships, from fighters to capital ships, slow down in space? There's nothing out there for friction to occur...so once you enter hyperspace you can never slow down unless you have engines in the front of your ship. So how do they change their speed in space?

You answered it in the first sentence. "So I know a lot of the dogfights and stuff in Star Wars are completely unrealistic". But apparently the thrusters get reversed and suck in instead of blowing out, which slows down the ship.

You could imagine that the ships have small jets for maneuvering (as in the BSG reboot) and/or you could imagine that they are using exotic propulsion like the warp drive, which changes the properties of the space around the ship instead of propelling the ship through space.

Thruster jets couldn't accomplish the maneuvers seen in the movies, so I'm guessing it's gravity assisted. They obviously mastered artificial gravity, since they don't float around while in their ships, so it's not unreasonable for them to have developed a system that creates gravity fields in the direction they want ships to turn.